Dig a hole 2-3 times as wide as your hosta plant. Hostas are considered to be a shallow-rooted plant with roots that spread horizontally. Plant the hostas so the area where the leaves and roots meet is level with the soil. I like to make a mound of compost and peat moss to rest the crown on and run the roots downward. If the hosta is bare root, soak the roots in tepid water for a few hours before planting. Planting and spacing your hostas is a matter of personal choice. Hostas display to their best advantage when given space to majestically arch and touch the ground rather than overlapping others. Some of the varieties can be planted closer together, making beautiful sweeps and borders; this method is also useful as ground cover for effective weed control.